package cc.rengu.redp.bizimpl.utils;

import cc.rengu.redp.common.exception.RedpException;
import com.google.zxing.BarcodeFormat;
import com.google.zxing.EncodeHintType;
import com.google.zxing.MultiFormatWriter;
import com.google.zxing.WriterException;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
import org.apache.commons.codec.binary.Base64;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import javax.imageio.ImageIO;
import javax.servlet.ServletOutputStream;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.util.HashMap;
import java.util.Map;

/**
 * @Description: (二维码)
 */
public class ZXingCodeUtil {

    private static Logger log = LoggerFactory.getLogger(ZXingCodeUtil.class);
    private static final int QRCOLOR = 0xFF000000; // 默认是黑色
    private static final int BGWHITE = 0xFFFFFFFF; // 背景颜色

    public static void main(String[] args) throws WriterException {
        try {
            getLogoQRCode("https://www.baidu.com/", "跳转到百度的二维码", "C:/Users/luoguohui/Desktop/78310a55b319ebc4fa3aef658126cffc1f17168f.png", "E:/12314.png");
        } catch (Exception e) {
            log.error("生成二维码图片失败：", e);
        }
    }

    /**
     * 生成带logo的二维码图片
     *
     * @param qrPic
     * @param logoPic
     */
    public static String getLogoQRCode(String qrUrl, String text, String logoPath, String outputPath) {
        // String filePath =
        // (javax.servlet.http.HttpServletRequest)request.getSession().getServletContext().getRealPath("/")
        // + "resources/images/logoImages/llhlogo.png";
        // filePath是二维码logo的路径，但是实际中我们是放在项目的某个路径下面的，所以路径用上面的，把下面的注释就好
//		String filePath = "C:/Users/luoguohui/Desktop/78310a55b319ebc4fa3aef658126cffc1f17168f.png"; // TODO
        String content = qrUrl;
        try {
            ZXingCodeUtil zp = new ZXingCodeUtil();
            BufferedImage bim = zp.getQR_CODEBufferedImage(content, BarcodeFormat.QR_CODE, 400, 400,
                    zp.getDecodeHintType());
            return zp.addLogo_QRCode(bim, new File(logoPath), new LogoConfig(), outputPath);
        } catch (Exception e) {
            log.error("生成二维码图片失败：", e);
        }
        return null;
    }

    /**
     * 给二维码图片添加Logo
     *
     * @param qrPic
     * @param logoPic
     * @param destFullPath 生成二维码完整路径，只支持PNG，目录必须先创建好。
     */
    public String addLogo_QRCode(BufferedImage bim, File logoPic, LogoConfig logoConfig, String destFullPath) {
        try {
            /**
             * 读取二维码图片，并构建绘图对象
             */
            BufferedImage image = bim;
            Graphics2D g = image.createGraphics();

            /**
             * 读取Logo图片
             */
            BufferedImage logo = ImageIO.read(logoPic);
            /**
             * 设置logo的大小,本人设置为二维码图片的20%,因为过大会盖掉二维码
             */
            int widthLogo = logo.getWidth(null) > image.getWidth() * 3 / 10 ? (image.getWidth() * 3 / 10)
                    : logo.getWidth(null),
                    heightLogo = logo.getHeight(null) > image.getHeight() * 3 / 10 ? (image.getHeight() * 3 / 10)
                            : logo.getWidth(null);

            /**
             * logo放在中心
             */
            int x = (image.getWidth() - widthLogo) / 2;
            int y = (image.getHeight() - heightLogo) / 2;
            /**
             * logo放在右下角 int x = (image.getWidth() - widthLogo); int y =
             * (image.getHeight() - heightLogo);
             */

            // 开始绘制图片
            g.drawImage(logo, x, y, widthLogo, heightLogo, null);
            // g.drawRoundRect(x, y, widthLogo, heightLogo, 15, 15);
            // g.setStroke(new BasicStroke(logoConfig.getBorder()));
            // g.setColor(logoConfig.getBorderColor());
            // g.drawRect(x, y, widthLogo, heightLogo);
            g.dispose();


            logo.flush();
            image.flush();
            ByteArrayOutputStream baos = new ByteArrayOutputStream();
            baos.flush();
            ImageIO.write(image, "png", baos);

            // 二维码生成的路径，但是实际项目中，我们是把这生成的二维码显示到界面上的，因此下面的折行代码可以注释掉
            // 可以看到这个方法最终返回的是这个二维码的imageBase64字符串
            // 前端用 <img src="data:image/png;base64,${imageBase64QRCode}"/>
            // 其中${imageBase64QRCode}对应二维码的imageBase64字符串
            ImageIO.write(image, "png",
                    new File(destFullPath)); // TODO

            String imageBase64QRCode = Base64.encodeBase64URLSafeString(baos.toByteArray());

            baos.close();
            return imageBase64QRCode;
        } catch (Exception e) {
            log.error("给二维码图片添加Logo出现异常", e);
        }
        return null;
    }

    /**
     * 给二维码图片添加Logo、文本
     *
     * @param qrPic
     * @param logoPic
     * @param destFullPath 生成二维码完整路径，只支持PNG，目录必须先创建好。
     */
    public BufferedImage addLogoText_QRCode(BufferedImage bim, File logoPic, String text, File file) {
        BufferedImage image = bim;
        try {
            // 读取二维码图片，并构建绘图对象

            Graphics2D g = image.createGraphics();

            BufferedImage logo = null;
            // 画中心logo
            if (null != logoPic && logoPic.exists()) {
                // 读取Logo图片
                logo = ImageIO.read(logoPic);
                // 设置logo的大小,本人设置为二维码图片的20%,因为过大会盖掉二维码
                int widthLogo = logo.getWidth(null) > image.getWidth() * 3 / 10 ? (image.getWidth() * 3 / 10)
                        : logo.getWidth(null),
                        heightLogo = logo.getHeight(null) > image.getHeight() * 3 / 10 ? (image.getHeight() * 3 / 10)
                                : logo.getWidth(null);

                // logo放在中心
                int x = (image.getWidth() - widthLogo) / 2;
                int y = (image.getHeight() - heightLogo) / 2;
                /**
                 * logo放在右下角 int x = (image.getWidth() - widthLogo); int y =
                 * (image.getHeight() - heightLogo);
                 */

                // 开始绘制图片
                g.drawImage(logo, x, y, widthLogo, heightLogo, null);
                // g.drawRoundRect(x, y, widthLogo, heightLogo, 15, 15);
                // g.setStroke(new BasicStroke(logoConfig.getBorder()));
                // g.setColor(logoConfig.getBorderColor());
                // g.drawRect(x, y, widthLogo, heightLogo);
                g.dispose();
            }

            // 把商品名称添加上去，商品名称不要太长哦，这里最多支持两行。太长就会自动截取啦
            if (text != null && !text.equals("")) {
                // 新的图片，把带logo的二维码下面加上文字
                BufferedImage outImage = new BufferedImage(400, 445, BufferedImage.TYPE_4BYTE_ABGR);
                Graphics2D outg = outImage.createGraphics();
                // 画二维码到新的面板
                outg.drawImage(image, 0, 0, image.getWidth(), image.getHeight(), null);
                // 画文字到新的面板
                outg.setColor(Color.BLACK);
                outg.setFont(new Font("宋体", Font.BOLD, 30)); // 字体、字型、字号
                int strWidth = outg.getFontMetrics().stringWidth(text);
                if (strWidth > 399) {
                    // //长度过长就截取前面部分
                    // outg.drawString(text, 0, image.getHeight() +
                    // (outImage.getHeight() - image.getHeight())/2 + 5 ); //画文字
                    // 长度过长就换行
                    String productName1 = text.substring(0, text.length() / 2);
                    String productName2 = text.substring(text.length() / 2, text.length());
                    int strWidth1 = outg.getFontMetrics().stringWidth(productName1);
                    int strWidth2 = outg.getFontMetrics().stringWidth(productName2);
                    outg.drawString(productName1, 200 - strWidth1 / 2,
                            image.getHeight() + (outImage.getHeight() - image.getHeight()) / 2 + 12);
                    BufferedImage outImage2 = new BufferedImage(400, 485, BufferedImage.TYPE_4BYTE_ABGR);
                    Graphics2D outg2 = outImage2.createGraphics();
                    outg2.drawImage(outImage, 0, 0, outImage.getWidth(), outImage.getHeight(), null);
                    outg2.setColor(Color.BLACK);
                    outg2.setFont(new Font("宋体", Font.BOLD, 30)); // 字体、字型、字号
                    outg2.drawString(productName2, 200 - strWidth2 / 2,
                            outImage.getHeight() + (outImage2.getHeight() - outImage.getHeight()) / 2 + 5);
                    outg2.dispose();
                    outImage2.flush();
                    outImage = outImage2;
                } else {
                    outg.drawString(text, 200 - strWidth / 2,
                            image.getHeight() + (outImage.getHeight() - image.getHeight()) / 2 + 12); // 画文字
                }
                outg.dispose();
                outImage.flush();
                image = outImage;
            }

            // 将生成的二维码，画入模板中
            BufferedImage outImage = ImageIO.read(file);
            Graphics2D outg = outImage.createGraphics();
            // 画二维码到新的面板
//            outg.drawImage(image, 280, 550, 770, 800, null);
            if(1034==outImage.getHeight()&&1024==outImage.getWidth()){
                //x、y是左上角的起始坐标
                outg.drawImage(image, 280, 400, 470, 420, null);
            }else if(340==outImage.getHeight()&&350==outImage.getWidth()){
                outg.drawImage(image, 82, 112, 185, 175, null);
            }else{
                throw new RedpException("图片像素尺寸仅支持 340*350 或 1024*1034 ");
            }
            g.dispose();
            outImage.flush();
            image = outImage;

            if (null != logo) {
                logo.flush();
            }
            image.flush();

//            // 反显
//            ImageIO.write(image, "png", stream);
//            stream.flush();
//
//            stream.close();
        } catch (Exception e) {
            log.error("给二维码图片添加Logo及文本出现异常", e);
        }
        return  image;
    }

    /**
     * 给二维码图片添加Logo、文本
     *
     * @param qrPic
     * @param logoPic
     * @param destFullPath 生成二维码完整路径，只支持PNG，目录必须先创建好。
     */
    public String addLogoText_QRCode(BufferedImage bim, File logoPic, LogoConfig logoConfig, String text, String destFullPath, File file) {
        try {
//			读取二维码图片，并构建绘图对象
            BufferedImage image = bim;
            Graphics2D g = image.createGraphics();

            BufferedImage logo = null;
            // 画中心logo
            if (null != logoPic && logoPic.exists()) {
                // 读取Logo图片
                logo = ImageIO.read(logoPic);
                // 设置logo的大小,本人设置为二维码图片的20%,因为过大会盖掉二维码
                int widthLogo = logo.getWidth(null) > image.getWidth() * 3 / 10 ? (image.getWidth() * 3 / 10)
                        : logo.getWidth(null),
                        heightLogo = logo.getHeight(null) > image.getHeight() * 3 / 10 ? (image.getHeight() * 3 / 10)
                                : logo.getWidth(null);

                // logo放在中心
                int x = (image.getWidth() - widthLogo) / 2;
                int y = (image.getHeight() - heightLogo) / 2;
                /**
                 * logo放在右下角 int x = (image.getWidth() - widthLogo); int y =
                 * (image.getHeight() - heightLogo);
                 */

                // 开始绘制图片
                g.drawImage(logo, x, y, widthLogo, heightLogo, null);
                // g.drawRoundRect(x, y, widthLogo, heightLogo, 15, 15);
                // g.setStroke(new BasicStroke(logoConfig.getBorder()));
                // g.setColor(logoConfig.getBorderColor());
                // g.drawRect(x, y, widthLogo, heightLogo);
                g.dispose();
            }

            // 把商品名称添加上去，商品名称不要太长哦，这里最多支持两行。太长就会自动截取啦
            if (text != null && !text.equals("")) {
                // 新的图片，把带logo的二维码下面加上文字
                BufferedImage outImage = new BufferedImage(400, 445, BufferedImage.TYPE_4BYTE_ABGR);
                Graphics2D outg = outImage.createGraphics();
                // 画二维码到新的面板
                outg.drawImage(image, 0, 0, image.getWidth(), image.getHeight(), null);
                // 画文字到新的面板
                outg.setColor(Color.BLACK);
                outg.setFont(new Font("宋体", Font.BOLD, 30)); // 字体、字型、字号
                int strWidth = outg.getFontMetrics().stringWidth(text);
                if (strWidth > 399) {
                    // //长度过长就截取前面部分
                    // outg.drawString(text, 0, image.getHeight() +
                    // (outImage.getHeight() - image.getHeight())/2 + 5 ); //画文字
                    // 长度过长就换行
                    String productName1 = text.substring(0, text.length() / 2);
                    String productName2 = text.substring(text.length() / 2, text.length());
                    int strWidth1 = outg.getFontMetrics().stringWidth(productName1);
                    int strWidth2 = outg.getFontMetrics().stringWidth(productName2);
                    outg.drawString(productName1, 200 - strWidth1 / 2,
                            image.getHeight() + (outImage.getHeight() - image.getHeight()) / 2 + 12);
                    BufferedImage outImage2 = new BufferedImage(400, 485, BufferedImage.TYPE_4BYTE_ABGR);
                    Graphics2D outg2 = outImage2.createGraphics();
                    outg2.drawImage(outImage, 0, 0, outImage.getWidth(), outImage.getHeight(), null);
                    outg2.setColor(Color.BLACK);
                    outg2.setFont(new Font("宋体", Font.BOLD, 30)); // 字体、字型、字号
                    outg2.drawString(productName2, 200 - strWidth2 / 2,
                            outImage.getHeight() + (outImage2.getHeight() - outImage.getHeight()) / 2 + 5);
                    outg2.dispose();
                    outImage2.flush();
                    outImage = outImage2;
                } else {
                    outg.drawString(text, 200 - strWidth / 2,
                            image.getHeight() + (outImage.getHeight() - image.getHeight()) / 2 + 12); // 画文字
                }
                outg.dispose();
                outImage.flush();
                image = outImage;
            }

            if(null == file || !file.exists()){
                ByteArrayOutputStream baos = new ByteArrayOutputStream();
                baos.flush();
                ImageIO.write(image, "png", baos);
                ImageIO.write(image, "png",
                        new File(destFullPath)); // TODO
                String imageBase64QRCode = Base64.encodeBase64URLSafeString(baos.toByteArray());
                baos.close();
                return imageBase64QRCode;
            }
            // 将生成的二维码，画入模板中
            BufferedImage outImage = ImageIO.read(file);
            Graphics2D outg = outImage.createGraphics();
            // 画二维码到新的面板
            outg.drawImage(image, 280, 550, 770, 800, null);
            g.dispose();
            outImage.flush();
            image = outImage;

            if (null != logo) {
                logo.flush();
            }

            image.flush();

            ByteArrayOutputStream baos = new ByteArrayOutputStream();
            baos.flush();
            ImageIO.write(image, "png", baos);

            // 二维码生成的路径，但是实际项目中，我们是把这生成的二维码显示到界面上的，因此下面的折行代码可以注释掉
            // 可以看到这个方法最终返回的是这个二维码的imageBase64字符串
            // 前端用 <img src="data:image/png;base64,${imageBase64QRCode}"/>
            // 其中${imageBase64QRCode}对应二维码的imageBase64字符串
            ImageIO.write(image, "png",
                    new File(destFullPath)); // TODO

            String imageBase64QRCode = Base64.encodeBase64URLSafeString(baos.toByteArray());

            baos.close();
            return imageBase64QRCode;
        } catch (Exception e) {
            log.error("给二维码图片添加Logo及文本出现异常", e);
        }
        return null;
    }

    /**
     * 给二维码图片添加文本
     *
     * @param bim
     * @param text
     * @param destFullPath      生成二维码完整路径，只支持PNG，目录必须先创建好。
     * @param backgroundImgPath 立牌模板完整路径，目录必须先创建好。
     * @return
     */
    public String addText_QRCode(BufferedImage bim, String text, String destFullPath, String backgroundImgPath) {
        try {
            /**
             * 读取二维码图片，并构建绘图对象
             */
            BufferedImage image = bim;
            Graphics2D g = image.createGraphics();

            // 把文本添加上去，文本不要太长，这里最多支持两行。太长就会自动截取啦
            if (text != null && !text.equals("")) {
                // 新的图片，把二维码下面加上文字
//				String backgroundImgPath="E:\\/\\/rengu_workspaces\\/ws_ythsd\\/.metadata\\/.plugins\\/org.eclipse.wst.server.core\\/tmp0\\/wtpwebapps\\/MCMP\\/upload\\/snb-01.jpg";
                BufferedImage outImage = ImageIO.read(new File(backgroundImgPath));
//				BufferedImage outImage = new BufferedImage(400, 420, BufferedImage.TYPE_INT_ARGB);
                Graphics2D outg = outImage.createGraphics();
                // 画二维码到新的面板
//				outg.setBackground(Color.WHITE);
                outg.drawImage(image, 310, 550, 710, 710, null);
                // 画文字到新的面板
                outg.setColor(Color.BLACK);
                outg.setFont(new Font("宋体", Font.PLAIN, 40)); // 字体、字型、字号
                int strWidth = outg.getFontMetrics().stringWidth(text);
                if (strWidth > 710) {
                    // //长度过长就截取前面部分
                    // outg.drawString(text, 0, image.getHeight() +
                    // (outImage.getHeight() - image.getHeight())/2 + 5 ); //画文字
                    // 长度过长就换行
                    String productName1 = text.substring(0, text.length() / 2);
                    String productName2 = text.substring(text.length() / 2, text.length());
                    int strWidth1 = outg.getFontMetrics().stringWidth(productName1);
                    int strWidth2 = outg.getFontMetrics().stringWidth(productName2);
                    outg.drawString(productName1, 650 - strWidth1 / 2,
                            1270);
                    BufferedImage outImage2 = new BufferedImage(400, 465, BufferedImage.TYPE_4BYTE_ABGR);
                    Graphics2D outg2 = outImage2.createGraphics();
                    outg2.drawImage(outImage, 0, 0, outImage.getWidth(), outImage.getHeight(), null);
                    outg2.setColor(Color.BLACK);
                    outg2.setFont(new Font("宋体", Font.PLAIN, 40)); // 字体、字型、字号
                    outg2.drawString(productName2, 650 - strWidth2 / 2,
                            1310);
                    outg2.dispose();
                    outImage2.flush();
                    outImage = outImage2;
                } else {
                    outg.drawString(text, 650 - (strWidth / 2),
                            1300); // 画文字
                }
                outg.dispose();
                outImage.flush();
                image = outImage;
            }
            image.flush();
            ByteArrayOutputStream baos = new ByteArrayOutputStream();
            baos.flush();
            ImageIO.write(image, "png", baos);

            // 二维码生成的路径，但是实际项目中，我们是把这生成的二维码显示到界面上的，因此下面的折行代码可以注释掉
            // 可以看到这个方法最终返回的是这个二维码的imageBase64字符串
            // 前端用 <img src="data:image/png;base64,${imageBase64QRCode}"/>
            // 其中${imageBase64QRCode}对应二维码的imageBase64字符串
            ImageIO.write(image, "png", new File(destFullPath)); // TODO
            log.info("生成二维码图片[{}]", destFullPath);
            String imageBase64QRCode = Base64.encodeBase64URLSafeString(baos.toByteArray());

            baos.close();
            return imageBase64QRCode;
        } catch (Exception e) {
            log.error("给二维码图片添加文本出现异常", e);
        }
        return null;
    }

    /**
     * 构建初始化二维码
     *
     * @param bm
     * @return
     */
    public BufferedImage fileToBufferedImage(BitMatrix bm) {
        BufferedImage image = null;
        try {
            int w = bm.getWidth(), h = bm.getHeight();
            image = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);

            for (int x = 0; x < w; x++) {
                for (int y = 0; y < h; y++) {
                    image.setRGB(x, y, bm.get(x, y) ? 0xFF000000 : 0xFFCCDDEE);
                }
            }

        } catch (Exception e) {
            log.error(e.getMessage());
        }
        return image;
    }

    /**
     * 生成二维码bufferedImage图片
     *
     * @param content       编码内容
     * @param barcodeFormat 编码类型
     * @param width         图片宽度
     * @param height        图片高度
     * @param hints         设置参数
     * @return
     */
    public BufferedImage getQR_CODEBufferedImage(String content, BarcodeFormat barcodeFormat, int width, int height,
                                                 Map<EncodeHintType, ?> hints) {
        MultiFormatWriter multiFormatWriter = null;
        BitMatrix bm = null;
        BufferedImage image = null;
        try {
            multiFormatWriter = new MultiFormatWriter();
            // 参数顺序分别为：编码内容，编码类型，生成图片宽度，生成图片高度，设置参数
            bm = multiFormatWriter.encode(content, barcodeFormat, width, height, hints);
            int w = bm.getWidth();
            int h = bm.getHeight();
            image = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);

            // 开始利用二维码数据创建Bitmap图片，分别设为黑（0xFFFFFFFF）白（0xFF000000）两色
            for (int x = 0; x < w; x++) {
                for (int y = 0; y < h; y++) {
                    image.setRGB(x, y, bm.get(x, y) ? QRCOLOR : BGWHITE);
                }
            }
        } catch (WriterException e) {
            log.error(e.getMessage());
        }
        return image;
    }

    /**
     * 设置二维码的格式参数
     *
     * @return
     */
    public Map<EncodeHintType, Object> getDecodeHintType() {
        // 用于设置QR二维码参数
        Map<EncodeHintType, Object> hints = new HashMap<EncodeHintType, Object>();
        // 设置QR二维码的纠错级别（H为最高级别）具体级别信息
        hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);
        // 设置编码方式
        hints.put(EncodeHintType.CHARACTER_SET, "utf-8");
        hints.put(EncodeHintType.MARGIN, 0);
        hints.put(EncodeHintType.MAX_SIZE, 350);
        hints.put(EncodeHintType.MIN_SIZE, 100);

        return hints;
    }
}

class LogoConfig {
    // logo默认边框颜色
    public static final Color DEFAULT_BORDERCOLOR = Color.WHITE;
    // logo默认边框宽度
    public static final int DEFAULT_BORDER = 2;
    // logo大小默认为照片的1/5
    public static final int DEFAULT_LOGOPART = 5;

    private final int border = DEFAULT_BORDER;
    private final Color borderColor;
    private final int logoPart;

    /**
     * Creates a default config with on color {@link #BLACK} and off color
     * {@link #WHITE}, generating normal black-on-white barcodes.
     */
    public LogoConfig() {
        this(DEFAULT_BORDERCOLOR, DEFAULT_LOGOPART);
    }

    public LogoConfig(Color borderColor, int logoPart) {
        this.borderColor = borderColor;
        this.logoPart = logoPart;
    }

    public Color getBorderColor() {
        return borderColor;
    }

    public int getBorder() {
        return border;
    }

    public int getLogoPart() {
        return logoPart;
    }
}
